The MSSM Higgs Sector with a Dynamical Goldstino Supermultiplet

Abstract

We consider a supersymmetric realization of the MSSM Higgs sector, where the soft terms are promoted to supersymmetric operators and a minimal weakly coupled hidden sector is included. The model exhibits long-lived meta-stable vacua in which supersymmetry and electroweak symmetry are spontaneously broken. The spectrum contains, in addition to the usual MSSM particles and the goldstino fermion, a CP-even and a CP-odd scalar in the neutral Higgs sector corresponding to the complex sgoldstino scalar. By treating all the components of the goldstino supermultiplet dynamically and taking into account their interactions with the Higgs fields, additional couplings beyond those of the MSSM are induced. When the supersymmetry breaking scale is low, these couplings can raise the masses of all the Higgs particles above the LEP bound, already at tree level and for any value of tan(beta). The model includes a scenario where, for any choice of the supersymmetry breaking scale, the set of parameters is reduced to the standard set (mu, Bmu, tan(beta)) of the MSSM Higgs sector but where novel decays of doublet-like states into sgoldstino-like states are kinematically allowed.

24 pages; v2: references added

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• Search for Neutral MSSM Higgs Bosons at LEP
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• Photophilic Higgs from sgoldstino mixing
• Decoupling Limits of sGoldstino Modes in Global and Local Supersymmetry
• Dirac Gauginos in Low Scale Supersymmetry Breaking
• Supersymmetry Breaking by Higher Dimension Operators
• BMSSM Higgses at 125 GeV
• Low-scale SUSY breaking and the (s)goldstino physics
• Liberating Higgs couplings in supersymmetry
• Sgoldstino-Higgs mixing in models with low-scale supersymmetry breaking
• Higgs diphoton rate enhancement from supersymmetric physics beyond the MSSM
• Fixing the EW scale in supersymmetric models after the Higgs discovery
• Naturalness in low-scale SUSY models and "non-linear" MSSM
• Non-Linear Single Higgs MSSM
• Universal contributions to scalar masses from five dimensional supergravity
• ATLAS diboson excess from low scale supersymmetry breaking
• Comments on the nilpotent constraint of the goldstino superfield
• Lepton flavor-violating decays of the Higgs boson from sgoldstino mixing
• Multiphoton signatures of goldstini at the LHC
• Monophoton signals in light gravitino production at $e^{+}{e}^{-}$ colliders
• SUSY Higgs searches : beyond the MSSM
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• Sgoldstino signature in $hh$, $W^{+}{W}^{-}$ and $ZZ$ spectra at the LHC
• Multilepton and multiphoton signatures of supersymmetry at the LHC
• D-instantons and Dualities in String Theory
• Top-down Beyond the Standard Model Review
• Effective Approaches in and Beyond the MSSM : applications to Higgs Physics and Dark Matter observables